Method of forming matrices



Dec.` 14 1926. 1,610,515 W. SL HADAWAY,IJR

METHOD oF FORMING MATRIcEs Original Filed July 26, 191'/ 2 sheets-shee 1 Dec. 14, 1926. 1,610,515

` W. S. HADAWAY, JR

METHOD OF FORMING MATRICES original Filed July 26, 1917 2 sheets-sheet 2 ff d? Patented Dec. 14, 1926.

UNITE. STATFS PATENT FFEQE.

WILLIAM S. HA'DAWAY, JR., OF NEVI ROCHELLE, NEVI' YORK.

METHOD OF FORMING MLTRICES.

OriginaI application filed July 25, 1317, eral No. 182,816. Divided and this application filed February r mch is placed with a plurality of wool blankets on top of it. These parts are then pressed together and the heat from the bed is conducted through the type and slugs to the matrix7 the evaporated moisture from which is slowly condensed and absorbed in the blankets. to be dried out for subsequent operations.

The heat ofthe bed tends to soften the boti tom of the type and slugs, and as the heat is applied to the base of the form, instead of at the top where it is used, the temperature available for drying the matrix is very limited. f

According to this invention,Y I do away with the blankets or pads which have been used to condense and absorb the moisture from the matrix and provide a heated elastic pad, preferably a part of the press head, the. surface of which acts as a condenser for a brief period and then acts as a conductor for the moisture which is carried off at the edges of the pad with the heating vapor. I prefer to use superheated steam as the heating medium because it is capable of takingffup a great quantity of moisture. The type will not be overheated even though a large quantity of high temperature steam is applied to the pad, andthe drying is ef fected in exceedingly short time. Provision may be made for cooling the type bed for insuring the type against damage by heat.

I also provide a press head structure which distributes the heated vapor or dry steam with substantial 'uniformity over the surface of the pad thereby insuring that the central portions of the mat will dry first 'as the moisture is driven out transversely through the pad. By this means a permanent flexible padding is secured which can These become wet and have Serial No. 616,575?.

be kept dry and the form is preserved against any possible damage by heat.

In order that my invention may be thoroughly understood l will now proceed to describe the same in the following specification, and thon will point out the novel features Ythereof in api'iended claims.

Referring to the drawings, Fig. l is a sectional elevation of a heating and drying press arranged and constructed in accordance with my invention and adaptedl for practicing the same.

Fig. 2 is a bottom plan view of the upper press head of Fig. 1 with the surface coverings broken away to disclose the interior construction of the head.

Fig. 3 is a partial section on an enlarged scale showing in detail the formation of the surface pad of the upper head.

Figs. i and 5 are elevations at right angles to each other of a matrix drying press embodying a movable press head arranged and constructed in accordance with my invention and adapted to act both as an elastic pad and as a heating and drying member.

Fig. 6 is a plan view of a form comprising a chase with linotype slugs held therein by means of tapered quoins.

Fig. 7 is a plan view on a-la-rger scale cfa plurality of linotype slugs showing in an exaggerated manner spaces which are left between them.

1Fig. 8 is a sectional elevation of a linotype s ug. 1

Referring particularly to Figs. l, 2 and 3, 10 designates the base of a matrix press which, if desired, may be hollow as shown at 11 and provided with inlet and outlet conduits 12 and 13 for water cooling rpurposes. The movable press head is designated by 2O and this comprises a frame 21 having webs 22 which divide the frame into a plurality of rectangular pockets which are clearly shown in Fig. 2 and are designated by the reference number 23. Secured to the frame 2() above it is a distributing member 24 having a chamber 25 to -which the hot vapor is supplied through the pipe 26 and a plurality of passages 27 having flaring openings 28 communicating respectively with the pockets 23.

The spaces or pockets 23 are filled with masses 8O of wire screen or some other. suit able porous structure through which the hot vapor may percolate. Beyond the webs 22 wire screens 31 or the like are stretched over the' entire frame and outside of the wire screens 31 is an inner pad 32, the outer pad 33 and a surface covering Se ot cloth.

As shown in the drawings in Figs. 1 and 3, I prefer to utilize screens oi coarser mesh at the top and build up screens ot liner and liner mesh below them in order to combine the strength and rigidity of the heavier screens with the small openings and elasticity o1'I the liner screens. The pads and 33 and the surface covering 3s are porous so that the hot vapor or steam which is admitted to the pockets percolates through the pad after it passes through the screen pads.

The press head to which steam is supplied can be kept hot readily by supplying low temperature steam through the pipe 26 and since the heat capacity et the. head is not large' it .responds very quickly when high temperature steam is supplied. In other words, the standby losses are low and the apparatus may be kept in condition for use.

The form 40 comprises a chase #il in which linotype slugs 42 or othe.l desired pieces may be located as, tor example. by tapered quoins 43. The linotype slugs 42 are usually cfu structed with spaced ribs 414s projecting from one or both sides thereof and their lower ends are sometimes honeycombed or hollowed out as represented at t5 (Fig. 8). The ribs 14, cause the spaces e6 to be lett between the slugsv when they are put together.

The matrix drying press shown in Figs. 4 and 5 comprises a support 50 for the bed 10 and a yoke 51 which carries the head 20 movably. This yoke is arranged to bring the head down toward the bed 10 under pressure and a' hand wheel 52 is provided for adjustment purposes.

I will now describe the operation of this apparatus. The torni 40 is placed on the bed 10 (Figs. 1 and and a mat of moist papierY mche is placed over it. Superheated steam is passed through the head. for a moment resulting in' drying its pad. rThen the head is lowered under pressure onto the mat 53 and the how of superheated steam is renewed or continued. Some of the moisture ot the mat is squeezed out by the pressure and thus can fall freely through the spaces 416 of the form.

The heat of the hea-d which is .now in contact under pressure with the mat will cause the remaining moisture in the mat to evaporate and this` evaporated moisture will be taken up by the superheated steam and carried oit transversely at the edges of the pad. This operation will continue until the moisture is all removed after which the continued heat of the head will dry and bake the mat. By this means the high temperature of the steam which is every edective in drying the mat is applied thereto directly and j the water Jacket 11 of the bed upon hieh they rest. i'ii''ter the matriz; is completed the head is raised and is then in a perectly dry condition ready tor the ne.\t operation.

It is to be noted that the heat used to the matrix applied directly to the niet a the top ot' the lform where it is most effective and not at the base where it has to be c ducted up through the lorm to the inzit. rlhus a higher degree oi heat can be used than with tormer methods.

An important 'feature o't' this invention is that when the matriz; is Vformed. the plication to the mat heat on the sinftac'.: away trom. the form causes this surface to harden first. rIhe underside ot the mat which comes in contact witii the form remains sol't and pliable for a longer time and is carried (.own into the line delicate characters ot the type and cuts and this operation is assisted "5 by the tact that the upper surface has in the meantime become stitened. Because oi thif fact a more perfect matrix is formed thai with former practice because as heretofore made the parts of the mat which first come 57 in contact with the heated type become hardened before they have fully permeated the parts ot the type and cuts. With the present method although the proportional time for forming the working face ot the matrix is greater than with former methods, the whole process is carried on and completed in a shorter period of time than has been possible heretofore.

To facilitate drying and hardening the matrices an enveloping ring of porous packing material may be placed on the bed 10 around the edges of the form in such position that it will be engaged by the head and thus enclose the space in which the form is seated. As the type and slugs and cuts in the form have a definite and constant'height, known as type-high, a reasonably tight lioint is easily secured and the porosity of the packing7 permitting the vapor to escape through it, permits sizing in the mat to be not only dried but subsequently heat treated and hardened. n

This application is a division ol an application Serial Number 182.816 iiled July 26, 191'(- and copending herewith on which Patent No. 1,551,149 was issued August 25, 1925.

Various advantages will suggest themselves to those skilled in the art and I intend only such limitations as are indicated in the appended claims.

lhat I claim is:

1. The herein method of forming a matrix which comprises pressing a moist mat onto a form, and directing dry steam to the mat.

52. The herein method of forming a matrix which comprises supporting a form on an unheated bed, pressing a moist mat onto the form, and drying the mat while pressed by directing dry steam to the mat.

3. The herein method of forn'iing a matrix which comprises pressing a moist mat onto a form, cooling the lower part of the form, and drying the mat while pressed by directing dry steam to the mat from the side thereof out of contact with the Yform.

4. The herein method of forming a matrix which comprises pressing a` moist mat onto a torm enclosing the form and mat and directing dry steam to the mat. t

5. The herein method of forming a matrix which comprises supporting a form on an unheated bed, pressing a moist mat onto the form, enclosing the form and mat and drying the mat while pressed by directing dry steam to the mat.

6. The herein method of forming a matrix which comprises pressing a moist mat onto a it'orm, cooling the lower part of the form, enclosing the form and mat and drying the mat While pressed by directing dry steam to the mat from the side thereof out of contact with the form.

7. The herein described method of forming a matrix which comprises placing a vertically porous form on an unheated bed, squeezing a moist mat onto the side of the 'form away from theL bed, and directing a hot drying vapor onto the mat.

8. The herein described method of forming a matrix which comprises placing a Vertically porous Jform on an unheated'bed, squeezing a moist mat ont-o the side of the form away from the bed, enclosing the form and the mat, and directing a hot drying Vapor onto the mat.

9. The herein described method of forming a matrix which comprises placing a vertically porous form on an unheated bed, squeezing a moist mat onto the side of the form. away from the bed, and directing dry steam onto the mat.

10. The herein described method ot forminga matrix which comprises placing a Vertically porous form on an unheated bed, squeezing a moist mat onto the side of the form away from the bed, enclosing the form and the mat, and directing dry steam onto the mat.

In Witness whereof, I have hereunto set my hand this 2nd day of February, 1923.

WILLIAM S. HADAWAY, JR. 

